Improvement in edging-machines



A. T. NICHOLS & 0. H'. YOUNG.

Edging-Machines.

Nd.l55,103. PatentedSept .15,1874.

O O .6 g

O O O -O O b w 0 .m R1 E- o o wlmEsS Es a I INVENTOR- Attorneys 5 THE GRAPHIC co. PHQYU-IJTM.3B & 44 PARK PLABE,N.Y.

UNITED STATES PATENT OFFICE.

ALBERT T.-NIOHOLS AND OLIVER H. YOUNG, OF WILLIAMSPORT, PA.

IMPROVEMENT IN EDGlNG-MACHINES.

Specification forming part of Letters PatentNo. 155,103, dated September 15, 1874; application filed August 4, 1874.

To all whom it may concern:

Be it known that we, ALBERT T. NIonoLs and OLIVER H. YOUNG, of Williamsport, in the county of Lycoming and in the State of Pennsylvania, have invented certain new and useful Improvements in Edging-Machines; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

The nature of our invention consists in certain improvements upon edging or ripping saw-machines, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which our invention appertains to make and use the same, we will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a plan view of an edging or ripping saw-machine embodying our invention. Fig. 2 is a perspective view of a fork used in adjusting the movable saw. Y

A represents the frame of a ripping sawmaehine with saw-arbor B, having one stationary saw, 0, and one or moremovable saws, G. D is the feed-table, upon which is located the movable guide E. G G are the feed-rollers in front of the saws, and G G the feed-rollers in rear thereof. In front and rear of the machine are extended frames H H, each of which contains one or more rollers, I I. One or more of these rollers on each side are not set square with the machine, but the outer ends, or the ends farthest from the guide E, are carried or out toward the ma chine on both sides thereof. The roller I in front of the saws, being cut around or set with the end farthest from the guide nearer the saws than the other end, will draw the lumber close up to and against the guide. 1f, now, the roller in rear of the saw were set straight or parallel with the saw-arbor the lumber would not be held close to the gage during the whole length; but by inclining said roller in the opposite direction, or, in other words, setting it also with the end farthest from the guide nearer the saws than the other end, the lumber will be drawn both in front and in rear of the saws close up to the guide during the whole time the lumber passes through the saws. By this means the board next to the gage will be of uniform width, which otherwise it would be impossible to make it.

The lower front feed-roller G is made larger at the inner end than at the outer, and around the larger end are formed screw-threads, as

shown at a. This is an additional means for drawing the lumber up to the guide, and is used principally for heavy lumber.

The movable saw 0 is adjusted upon the arbor by the devices as described in a former patent granted to A. T. NIoHoLs.

The fork which straddles the grooved hub of this saw is split longitudinally in two parts, J and J, connected together by one or more screws, 1), the object being to spread said parts by the insertion of thin strips of paper or other suitable material when the parts or the sawhub become worn.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is- I 1. In combination with the saw-arbor and its saws, the front and rear feed-rollers and the guide E of a sawing-machine, one or more inclined rollers, I, in front of the saws, and one or more rollers, I, inclined in an opposite direction in the rear of the saws, substantially as and for the purposes herein set forth.

2. The combination, with the horizontal table I) and the horizontal guide E, of the under feed-roller G, having a plain surface andits end nearest the guide enlarged, and

provided with screw-threads, as and for the purposes herein set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 14th day of July, 1874.

ALBERT T. NICHOLS. OLIVER H. YOUNG. Witnesses:

THOMAS JOHNSTON, W. V. MYERS. 

